$ git clone -n https://src.fedoraproject.org/rpms/gtksourceviewmm.git /var/lib/mock/f40-build-2597331-62839/root/chroot_tmpdir/scmroot/gtksourceviewmm
Cloning into '/var/lib/mock/f40-build-2597331-62839/root/chroot_tmpdir/scmroot/gtksourceviewmm'...
$ git fetch origin 8e7bd5e36c98e0cfdecb522e4fec411f5e1a8d57:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtksourceviewmm
 * [new ref]         8e7bd5e36c98e0cfdecb522e4fec411f5e1a8d57 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e7bd5e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild