$ git clone -n https://src.fedoraproject.org/rpms/rust-alacritty_config.git /var/lib/mock/f45-build-40043-767/root/chroot_tmpdir/scmroot/rust-alacritty_config
Cloning into '/var/lib/mock/f45-build-40043-767/root/chroot_tmpdir/scmroot/rust-alacritty_config'...
$ git fetch origin 4796598a519788d09609e167032dc7f133ad3f48:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-alacritty_config
 * [new ref]         4796598a519788d09609e167032dc7f133ad3f48 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4796598 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild