$ git clone -n https://src.fedoraproject.org/rpms/gstreamermm.git /var/lib/mock/f42-build-3485723-45830/root/chroot_tmpdir/scmroot/gstreamermm
Cloning into '/var/lib/mock/f42-build-3485723-45830/root/chroot_tmpdir/scmroot/gstreamermm'...
$ git fetch origin 5f02b7502185511aba745c4faca11cc49bf5a7d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamermm
 * [new ref]         5f02b7502185511aba745c4faca11cc49bf5a7d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f02b75 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild