$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Deep.git /var/lib/mock/f45-build-26615-618/root/chroot_tmpdir/scmroot/perl-Test-Deep
Cloning into '/var/lib/mock/f45-build-26615-618/root/chroot_tmpdir/scmroot/perl-Test-Deep'...
$ git fetch origin dcb714a1c013ccea58ab118af72a7422859794b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Deep
 * [new ref]         dcb714a1c013ccea58ab118af72a7422859794b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dcb714a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild