$ git clone -n https://src.fedoraproject.org/rpms/rust-roxmltree.git /var/lib/mock/f40-build-2093421-50319/root/chroot_tmpdir/scmroot/rust-roxmltree
Cloning into '/var/lib/mock/f40-build-2093421-50319/root/chroot_tmpdir/scmroot/rust-roxmltree'...
$ git fetch origin 7337f09c30a47b57774fb7023ae0073316e70c96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-roxmltree
 * [new ref]         7337f09c30a47b57774fb7023ae0073316e70c96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7337f09 Update to version 0.18.1; Fixes RHBZ#2241523