$ git clone -n https://src.fedoraproject.org/rpms/rust-gif.git /var/lib/mock/f45-build-41896-786/root/chroot_tmpdir/scmroot/rust-gif
Cloning into '/var/lib/mock/f45-build-41896-786/root/chroot_tmpdir/scmroot/rust-gif'...
$ git fetch origin c3df73706a3cc08566790b1505797ee47e9708d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gif
 * [new ref]         c3df73706a3cc08566790b1505797ee47e9708d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3df737 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild