$ git clone -n https://src.fedoraproject.org/rpms/perl-Module-Manifest.git /var/lib/mock/f45-build-24887-607/root/chroot_tmpdir/scmroot/perl-Module-Manifest
Cloning into '/var/lib/mock/f45-build-24887-607/root/chroot_tmpdir/scmroot/perl-Module-Manifest'...
$ git fetch origin c8b8b320e05ca5c55ce1bdb77dea7b26910598ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Module-Manifest
 * [new ref]         c8b8b320e05ca5c55ce1bdb77dea7b26910598ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8b8b32 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild