$ git clone -n https://src.fedoraproject.org/rpms/libmongocrypt.git /var/lib/mock/f42-build-862858-171186/root/chroot_tmpdir/scmroot/libmongocrypt
Cloning into '/var/lib/mock/f42-build-862858-171186/root/chroot_tmpdir/scmroot/libmongocrypt'...
$ git fetch origin 6598b67c61c0d5fe1e34076bc123f0411975852d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmongocrypt
 * [new ref]         6598b67c61c0d5fe1e34076bc123f0411975852d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6598b67 v1.12.0