$ git clone -n https://src.fedoraproject.org/rpms/budgie-session.git /var/lib/mock/f40-build-796676-140843/root/chroot_tmpdir/scmroot/budgie-session
Cloning into '/var/lib/mock/f40-build-796676-140843/root/chroot_tmpdir/scmroot/budgie-session'...
$ git fetch origin 5e2de5a2cd98571d9150aa2b398d2f7421c9df3c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/budgie-session
 * [new ref]         5e2de5a2cd98571d9150aa2b398d2f7421c9df3c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e2de5a Initial commit (fedora#2262503)