$ git clone -n https://src.fedoraproject.org/rpms/vamp-plugin-sdk.git /var/lib/mock/f41-build-1164858-21591/root/chroot_tmpdir/scmroot/vamp-plugin-sdk
Cloning into '/var/lib/mock/f41-build-1164858-21591/root/chroot_tmpdir/scmroot/vamp-plugin-sdk'...
$ git fetch origin b6d4221aff6c72ea3fde62f23bcba5287314ced1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vamp-plugin-sdk
 * [new ref]         b6d4221aff6c72ea3fde62f23bcba5287314ced1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6d4221 Convert to %autorelease and %autochangelog