$ git clone -n http://git.inferitos.ru/rpms/perl-Math-BigInt-FastCalc /var/lib/mock/inferit-8_8-build-26062-44582/root/chroot_tmpdir/scmroot/perl-Math-BigInt-FastCalc
Cloning into '/var/lib/mock/inferit-8_8-build-26062-44582/root/chroot_tmpdir/scmroot/perl-Math-BigInt-FastCalc'...
$ git fetch origin changed/i8c/perl-Math-BigInt-FastCalc-0.500.600-6.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/perl-Math-BigInt-FastCalc
 * [new tag]         changed/i8c/perl-Math-BigInt-FastCalc-0.500.600-6.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2527307 edit changelog for import perl-Math-BigInt-FastCalc-0.500.600-6.el8