$ git clone -n https://src.fedoraproject.org/rpms/vim-gv.git /var/lib/mock/f40-build-2044728-48739/root/chroot_tmpdir/scmroot/vim-gv
Cloning into '/var/lib/mock/f40-build-2044728-48739/root/chroot_tmpdir/scmroot/vim-gv'...
$ git fetch origin 277ddfd1673653b699eec52631e1a752e1d507be:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vim-gv
 * [new ref]         277ddfd1673653b699eec52631e1a752e1d507be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 277ddfd build: Bump release