$ git clone -n https://src.fedoraproject.org/rpms/gnome-shell-extension-pop-shell.git /var/lib/mock/f39-build-1520577-35831/root/chroot_tmpdir/scmroot/gnome-shell-extension-pop-shell
Cloning into '/var/lib/mock/f39-build-1520577-35831/root/chroot_tmpdir/scmroot/gnome-shell-extension-pop-shell'...
$ git fetch origin 7581ea2fc1737b912cdc27a476914ba817656d6f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-shell-extension-pop-shell
 * [new ref]         7581ea2fc1737b912cdc27a476914ba817656d6f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7581ea2 Update to upstream snapshot for GNOME 45 compatibility