$ git clone -n https://src.fedoraproject.org/rpms/kalarm.git /var/lib/mock/f40-build-2576835-62280/root/chroot_tmpdir/scmroot/kalarm
Cloning into '/var/lib/mock/f40-build-2576835-62280/root/chroot_tmpdir/scmroot/kalarm'...
$ git fetch origin 9c1e1401f8f2883e7eecc58196df9b0af4b876a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kalarm
 * [new ref]         9c1e1401f8f2883e7eecc58196df9b0af4b876a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c1e140 Disable rtcwake service in flatpak builds