$ git clone -n https://src.fedoraproject.org/rpms/perl-MDV-Packdrakeng.git /var/lib/mock/f45-build-24554-604/root/chroot_tmpdir/scmroot/perl-MDV-Packdrakeng
Cloning into '/var/lib/mock/f45-build-24554-604/root/chroot_tmpdir/scmroot/perl-MDV-Packdrakeng'...
$ git fetch origin 8599e00a6922d179d53a19d6a123f29a51561252:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-MDV-Packdrakeng
 * [new ref]         8599e00a6922d179d53a19d6a123f29a51561252 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8599e00 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild