$ git clone -n https://src.fedoraproject.org/rpms/gnome-shell-extension-gsconnect.git /var/lib/mock/f42-build-side-1-3498270-45962/root/chroot_tmpdir/scmroot/gnome-shell-extension-gsconnect
Cloning into '/var/lib/mock/f42-build-side-1-3498270-45962/root/chroot_tmpdir/scmroot/gnome-shell-extension-gsconnect'...
$ git fetch origin 2d0b1c44680179088bc453c75cd452fafc99425e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-shell-extension-gsconnect
 * [new ref]         2d0b1c44680179088bc453c75cd452fafc99425e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d0b1c4 Update to 62