$ git clone -n https://src.fedoraproject.org/rpms/rust-tendril0.4.git /var/lib/mock/f45-build-45357-822/root/chroot_tmpdir/scmroot/rust-tendril0.4
Cloning into '/var/lib/mock/f45-build-45357-822/root/chroot_tmpdir/scmroot/rust-tendril0.4'...
$ git fetch origin 7ff13aec9e5257e6f2129ca0780f6aaaf572b412:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tendril0.4
 * [new ref]         7ff13aec9e5257e6f2129ca0780f6aaaf572b412 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ff13ae Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild