$ git clone -n https://src.fedoraproject.org/rpms/rust-cmac.git /var/lib/mock/f40-build-2035424-47965/root/chroot_tmpdir/scmroot/rust-cmac
Cloning into '/var/lib/mock/f40-build-2035424-47965/root/chroot_tmpdir/scmroot/rust-cmac'...
$ git fetch origin 6310198c01a8e5ee543fa9606d19f2987a58bcb0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cmac
 * [new ref]         6310198c01a8e5ee543fa9606d19f2987a58bcb0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6310198 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild