$ git clone -n https://src.fedoraproject.org/rpms/rust-xcb.git /var/lib/mock/f40-build-2151160-50903/root/chroot_tmpdir/scmroot/rust-xcb
Cloning into '/var/lib/mock/f40-build-2151160-50903/root/chroot_tmpdir/scmroot/rust-xcb'...
$ git fetch origin 41b5164fdfac071f645962f503dc8e3e4cb2e115:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-xcb
 * [new ref]         41b5164fdfac071f645962f503dc8e3e4cb2e115 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41b5164 Bump quick-xml dependency from 0.28 to 0.30