$ git clone -n https://src.fedoraproject.org/rpms/perl-Number-Misc.git /var/lib/mock/f45-build-25433-611/root/chroot_tmpdir/scmroot/perl-Number-Misc
Cloning into '/var/lib/mock/f45-build-25433-611/root/chroot_tmpdir/scmroot/perl-Number-Misc'...
$ git fetch origin c292d0cc1af1b09ba32406bd66cab24cc3769068:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Number-Misc
 * [new ref]         c292d0cc1af1b09ba32406bd66cab24cc3769068 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c292d0c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild