$ git clone -n https://src.fedoraproject.org/rpms/perl-Module-Install-Repository.git /var/lib/mock/f45-build-24760-606/root/chroot_tmpdir/scmroot/perl-Module-Install-Repository
Cloning into '/var/lib/mock/f45-build-24760-606/root/chroot_tmpdir/scmroot/perl-Module-Install-Repository'...
$ git fetch origin 9b8ec96ee1d07a7ce194c709c6b6686f20fd8312:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Module-Install-Repository
 * [new ref]         9b8ec96ee1d07a7ce194c709c6b6686f20fd8312 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b8ec96 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild