$ git clone -n https://src.fedoraproject.org/rpms/ImageMagick.git /var/lib/mock/f40-build-2236977-53529/root/chroot_tmpdir/scmroot/ImageMagick
Cloning into '/var/lib/mock/f40-build-2236977-53529/root/chroot_tmpdir/scmroot/ImageMagick'...
$ git fetch origin ed58afe7c99de6ccc45196a91442bd63c761c669:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ImageMagick
 * [new ref]         ed58afe7c99de6ccc45196a91442bd63c761c669 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ed58afe Disable perl in flatpak builds