$ git clone -n http://git.inferitos.ru/rpms/libpng12 /var/lib/mock/inferit-9-extras-build-18782-26845/root/chroot_tmpdir/scmroot/libpng12
Cloning into '/var/lib/mock/inferit-9-extras-build-18782-26845/root/chroot_tmpdir/scmroot/libpng12'...
$ git fetch origin changed/i9/libpng12-1.2.57-18.el9.inferit:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/libpng12
 * [new tag]         changed/i9/libpng12-1.2.57-18.el9.inferit -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8dc5c5 import libpng12-1.2.57-18.el9