$ git clone -n https://src.fedoraproject.org/rpms/perl-Time-Tiny.git /var/lib/mock/f45-build-27170-621/root/chroot_tmpdir/scmroot/perl-Time-Tiny
Cloning into '/var/lib/mock/f45-build-27170-621/root/chroot_tmpdir/scmroot/perl-Time-Tiny'...
$ git fetch origin 54324495d9cbc23ef6e4b50f1172fbb1272196db:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Time-Tiny
 * [new ref]         54324495d9cbc23ef6e4b50f1172fbb1272196db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5432449 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild