$ git clone -n https://src.fedoraproject.org/rpms/kmail.git /var/lib/mock/f40-build-2448317-61404/root/chroot_tmpdir/scmroot/kmail
Cloning into '/var/lib/mock/f40-build-2448317-61404/root/chroot_tmpdir/scmroot/kmail'...
$ git fetch origin 6006acd5b441e4f25fd18ee91fd2e29a09ffb7cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kmail
 * [new ref]         6006acd5b441e4f25fd18ee91fd2e29a09ffb7cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6006acd 24.01.95