$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Pod-Content.git /var/lib/mock/f45-build-26811-619/root/chroot_tmpdir/scmroot/perl-Test-Pod-Content
Cloning into '/var/lib/mock/f45-build-26811-619/root/chroot_tmpdir/scmroot/perl-Test-Pod-Content'...
$ git fetch origin a88593aac1438bd9e970151e9328fad274d0be40:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Pod-Content
 * [new ref]         a88593aac1438bd9e970151e9328fad274d0be40 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a88593a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild