$ git clone -n https://src.fedoraproject.org/rpms/telepathy-qt.git /var/lib/mock/f40-build-2043161-48601/root/chroot_tmpdir/scmroot/telepathy-qt
Cloning into '/var/lib/mock/f40-build-2043161-48601/root/chroot_tmpdir/scmroot/telepathy-qt'...
$ git fetch origin 54b568ab7b64f86e878b0f626c49d8a59fa0f752:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/telepathy-qt
 * [new ref]         54b568ab7b64f86e878b0f626c49d8a59fa0f752 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 54b568a Backport upstream patch for detecting needed header file with newer glib