$ git clone -n https://src.fedoraproject.org/rpms/rust-assert_cmd.git /var/lib/mock/f45-build-40220-769/root/chroot_tmpdir/scmroot/rust-assert_cmd
Cloning into '/var/lib/mock/f45-build-40220-769/root/chroot_tmpdir/scmroot/rust-assert_cmd'...
$ git fetch origin a31a77a899c6e9c8d25e5a27535c4bfa3bdf8635:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-assert_cmd
 * [new ref]         a31a77a899c6e9c8d25e5a27535c4bfa3bdf8635 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a31a77a Update to version 2.2.2; Fixes RHBZ#2459217