$ git clone -n https://src.fedoraproject.org/rpms/rust-assert_cmd.git /var/lib/mock/f38-build-side-42-init-devel-1395223-31050/root/chroot_tmpdir/scmroot/rust-assert_cmd
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1395223-31050/root/chroot_tmpdir/scmroot/rust-assert_cmd'...
$ git fetch origin bf94136d3c484951064b1169a2f39e09d5efdcd8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-assert_cmd
 * [new ref]         bf94136d3c484951064b1169a2f39e09d5efdcd8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bf94136 Update to version 2.0.12; Fixes RHBZ#2222996