$ git clone -n https://src.fedoraproject.org/rpms/bodhi-server.git /var/lib/mock/f41-build-side-1-3000923-36395/root/chroot_tmpdir/scmroot/bodhi-server
Cloning into '/var/lib/mock/f41-build-side-1-3000923-36395/root/chroot_tmpdir/scmroot/bodhi-server'...
$ git fetch origin c7b557e2a859828a5b8fc349760e00fd0a278507:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bodhi-server
 * [new ref]         c7b557e2a859828a5b8fc349760e00fd0a278507 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7b557e Backport upstream patch to build with latest zstandard (0.23.0)