$ git clone -n https://src.fedoraproject.org/rpms/tigervnc.git /var/lib/mock/f41-build-833735-157999/root/chroot_tmpdir/scmroot/tigervnc
Cloning into '/var/lib/mock/f41-build-833735-157999/root/chroot_tmpdir/scmroot/tigervnc'...
$ git fetch origin 7d26d373f84895c15d423d911c0eafefee9433d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tigervnc
 * [new ref]         7d26d373f84895c15d423d911c0eafefee9433d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d26d37 Backport upstream fixes: - vncsession: use /bin/sh if the user shell is not set - add missing comma in default security type list