$ git clone -n https://src.fedoraproject.org/rpms/libgcrypt.git /var/lib/mock/f41-build-1066276-19553/root/chroot_tmpdir/scmroot/libgcrypt
Cloning into '/var/lib/mock/f41-build-1066276-19553/root/chroot_tmpdir/scmroot/libgcrypt'...
$ git fetch origin acfb1a25d81ce0763611401bc60ea7945a57018c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libgcrypt
 * [new ref]         acfb1a25d81ce0763611401bc60ea7945a57018c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at acfb1a2 1.11.0-1