$ git clone -n https://src.fedoraproject.org/rpms/rust-bat.git /var/lib/mock/f41-build-861641-169928/root/chroot_tmpdir/scmroot/rust-bat
Cloning into '/var/lib/mock/f41-build-861641-169928/root/chroot_tmpdir/scmroot/rust-bat'...
$ git fetch origin f18ba1f00b0f973ef6f74717c1b96a4de5914002:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bat
 * [new ref]         f18ba1f00b0f973ef6f74717c1b96a4de5914002 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f18ba1f Bump git2 dependency from 0.18 to 0.19