$ git clone -n https://src.fedoraproject.org/rpms/gtksourceview3.git /var/lib/mock/f45-build-13176-447/root/chroot_tmpdir/scmroot/gtksourceview3
Cloning into '/var/lib/mock/f45-build-13176-447/root/chroot_tmpdir/scmroot/gtksourceview3'...
$ git fetch origin 651c15ba0c4fe7f5c37afce2eb718a58874f369b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtksourceview3
 * [new ref]         651c15ba0c4fe7f5c37afce2eb718a58874f369b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 651c15b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild