$ git clone -n https://src.fedoraproject.org/rpms/perl-Imager.git /var/lib/mock/f45-build-24287-603/root/chroot_tmpdir/scmroot/perl-Imager
Cloning into '/var/lib/mock/f45-build-24287-603/root/chroot_tmpdir/scmroot/perl-Imager'...
$ git fetch origin 213ee6ea6d6d7fe7bf2f13a92ed563cfe42d5ecf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Imager
 * [new ref]         213ee6ea6d6d7fe7bf2f13a92ed563cfe42d5ecf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 213ee6e 1.035 bump (rhbz#2519477)