$ git clone -n http://git.inferitos.ru/rpms/perl-Math-BigInt /var/lib/mock/inferit-9_1-bootstrap-build-2407-2005/root/chroot_tmpdir/scmroot/perl-Math-BigInt
Cloning into '/var/lib/mock/inferit-9_1-bootstrap-build-2407-2005/root/chroot_tmpdir/scmroot/perl-Math-BigInt'...
$ git fetch origin changed/i9c/perl-Math-BigInt-1.9998.18-460.el9:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/perl-Math-BigInt
 * [new tag]         changed/i9c/perl-Math-BigInt-1.9998.18-460.el9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58b25a2 import perl-Math-BigInt-1.9998.18-460.el9