$ git clone -n http://git.inferitos.ru/rpms/libxml2 /var/lib/mock/inferit-8_8-build-el8_8-29057-49241/root/chroot_tmpdir/scmroot/libxml2
Cloning into '/var/lib/mock/inferit-8_8-build-el8_8-29057-49241/root/chroot_tmpdir/scmroot/libxml2'...
$ git fetch origin changed/i8c/libxml2-2.9.7-16.el8_8.1:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/libxml2
 * [new tag]         changed/i8c/libxml2-2.9.7-16.el8_8.1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2594c5a import libxml2-2.9.7-16.el8_8.1