$ git clone -n https://src.fedoraproject.org/rpms/plasma-welcome.git /var/lib/mock/f40-build-2696283-69610/root/chroot_tmpdir/scmroot/plasma-welcome
Cloning into '/var/lib/mock/f40-build-2696283-69610/root/chroot_tmpdir/scmroot/plasma-welcome'...
$ git fetch origin 61cfbd67f6fc4b0d317c028212e9101f9ceec588:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-welcome
 * [new ref]         61cfbd67f6fc4b0d317c028212e9101f9ceec588 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61cfbd6 6.0.3