$ git clone -n https://src.fedoraproject.org/rpms/perl-Time-Fake.git /var/lib/mock/f45-build-27220-621/root/chroot_tmpdir/scmroot/perl-Time-Fake
Cloning into '/var/lib/mock/f45-build-27220-621/root/chroot_tmpdir/scmroot/perl-Time-Fake'...
$ git fetch origin 4ed9f162f40c7f3a06803b39dfecf516a9698405:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Time-Fake
 * [new ref]         4ed9f162f40c7f3a06803b39dfecf516a9698405 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4ed9f16 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild