$ git clone -n https://src.fedoraproject.org/rpms/perl-File-ShouldUpdate.git /var/lib/mock/f45-build-23595-598/root/chroot_tmpdir/scmroot/perl-File-ShouldUpdate
Cloning into '/var/lib/mock/f45-build-23595-598/root/chroot_tmpdir/scmroot/perl-File-ShouldUpdate'...
$ git fetch origin 90e9dc50c9df59e22201546899bd35b0515bab7c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-File-ShouldUpdate
 * [new ref]         90e9dc50c9df59e22201546899bd35b0515bab7c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 90e9dc5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild