$ git clone -n https://src.fedoraproject.org/rpms/libgta.git /var/lib/mock/f45-build-16281-484/root/chroot_tmpdir/scmroot/libgta
Cloning into '/var/lib/mock/f45-build-16281-484/root/chroot_tmpdir/scmroot/libgta'...
$ git fetch origin e91d4469bfe88d744dfa469867bb935ba0e8889e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libgta
 * [new ref]         e91d4469bfe88d744dfa469867bb935ba0e8889e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e91d446 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild