$ git clone -n https://src.fedoraproject.org/rpms/gnome-music.git /var/lib/mock/f41-build-side-1-2811743-32932/root/chroot_tmpdir/scmroot/gnome-music
Cloning into '/var/lib/mock/f41-build-side-1-2811743-32932/root/chroot_tmpdir/scmroot/gnome-music'...
$ git fetch origin 9070053bec4e726ec9c27c58e1707f0c7cb21b8b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-music
 * [new ref]         9070053bec4e726ec9c27c58e1707f0c7cb21b8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9070053 Update to 47.0