$ git clone -n https://src.fedoraproject.org/rpms/libmongocrypt.git /var/lib/mock/f40-build-797791-141532/root/chroot_tmpdir/scmroot/libmongocrypt
Cloning into '/var/lib/mock/f40-build-797791-141532/root/chroot_tmpdir/scmroot/libmongocrypt'...
$ git fetch origin 5c7857418924bfb40792fbd73c035663714ad947:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmongocrypt
 * [new ref]         5c7857418924bfb40792fbd73c035663714ad947 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c78574 update to 1.9.1 (no change)