$ git clone -n https://src.fedoraproject.org/rpms/gnome-shell-extension-system-monitor-applet.git /var/lib/mock/f45-build-11538-432/root/chroot_tmpdir/scmroot/gnome-shell-extension-system-monitor-applet
Cloning into '/var/lib/mock/f45-build-11538-432/root/chroot_tmpdir/scmroot/gnome-shell-extension-system-monitor-applet'...
$ git fetch origin ad6bbf0a6a1dd548e62e46760f2219b3019fe3e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-shell-extension-system-monitor-applet
 * [new ref]         ad6bbf0a6a1dd548e62e46760f2219b3019fe3e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad6bbf0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild