$ git clone -n https://src.fedoraproject.org/rpms/gnome-shell-extension-pidgin.git /var/lib/mock/f45-build-11537-432/root/chroot_tmpdir/scmroot/gnome-shell-extension-pidgin
Cloning into '/var/lib/mock/f45-build-11537-432/root/chroot_tmpdir/scmroot/gnome-shell-extension-pidgin'...
$ git fetch origin 9e7476808083ef81648b17387661b3058dcd118b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-shell-extension-pidgin
 * [new ref]         9e7476808083ef81648b17387661b3058dcd118b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9e74768 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild